CN204692555U - A kind of automatic gear shift apparatus - Google Patents
A kind of automatic gear shift apparatus Download PDFInfo
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- CN204692555U CN204692555U CN201520354062.2U CN201520354062U CN204692555U CN 204692555 U CN204692555 U CN 204692555U CN 201520354062 U CN201520354062 U CN 201520354062U CN 204692555 U CN204692555 U CN 204692555U
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- shift fork
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Abstract
The utility model discloses a kind of automatic gear shift apparatus, belong to automobile technical field.This automatic gear shift apparatus comprises: control circuit, power amplifier and shift fork driving mechanism: described control circuit is analog circut, and it is provided with the first signal input part for receiving the speed of a motor vehicle and/or motor speed signal, for receiving secondary signal input end and the level signal output terminal of the position signal of gas pedal; The input end of described power amplifier is electrically connected with described level signal output terminal, output terminal is electrically connected with described shift fork driving mechanism, and under the control of the level signal of described level signal output terminal output, being switched on or switched off the power supply of described shift fork driving mechanism, shift fork is shifted gears.Adopt automatic gear shift apparatus of the present utility model, structure is simple, and volume is little, and quality is light, and power consumption is also few, reduces cost.
Description
Technical field
The utility model relates to automotive field, particularly relates to a kind of automatic gear shift apparatus.
Background technique
Electric motor car is a kind of free of contamination new traffic tool, but due to the technology of each side still immature, electric motor car is also limited to many-sided puzzlements such as battery capacity, course continuation mileage, duration of charge, price, running efficiency.One of them distinct issues is exactly the contradiction of self-shifting demand and gearbox price and weight.
In order to meet the demand of car speed and climbing, conventional one the two gear gearbox of people realizes: the little moment of torsion of top gear meets high-speed demand, and bottom gear high pulling torque meets hill climbing demands.On the other hand, user wishes that driving procedure is simply comfortable, therefore realizes self shifter essential.The automatic transmission case that current price is lower also only has electrical control automatic manual transmission case (Automated Mechanical Transmission, AMT) a kind of.In prior art, AMT not only needs micro computer to control, and also needs actuator, so weight can increase, cost also can increase.For electric motor car, gain in weight and just equal to reduce course continuation mileage, increase micro computer and just mean increase cost.
Therefore, be necessary to provide a kind of structure simple, lightweight low cost automatic gear shift apparatus.
Model utility content
In view of this, the technical problems to be solved in the utility model is to provide a kind of automatic gear shift apparatus, to solve the automatic transmission case complex structure of prior art, weight is large and cost is high defect.
It is as follows that the utility model solves the problems of the technologies described above adopted technological scheme:
According to an aspect of the present utility model, provide a kind of automatic gear shift apparatus, described automatic gear shift apparatus comprises control circuit, power amplifier and shift fork driving mechanism:
Described control circuit is analog circut, and it is provided with the first signal input part for receiving the speed of a motor vehicle and/or motor speed signal, for receiving secondary signal input end and the level signal output terminal of the position signal of gas pedal;
The input end of described power amplifier is electrically connected with described level signal output terminal, output terminal is electrically connected with described shift fork driving mechanism, and under the control of the level signal of described level signal output terminal output, being switched on or switched off the power supply of described shift fork driving mechanism, shift fork is shifted gears.
There is provided a kind of device as above, described control circuit comprises the first operational amplifier and hysteretic loop circuit:
Described first operational amplifier is used for carrying out addition subtraction multiplication and division power to the described speed of a motor vehicle of the first signal input part input and/or the accelerator pedal position signal of motor speed signal and the input of described secondary signal input end to carry out analog computation and determines shifting points, two input end is set to described first signal input part and secondary signal input end respectively, and output terminal is electrically connected with the input end of described hysteretic loop circuit;
The output terminal of described hysteretic loop circuit is electrically connected with the input end of described power amplifier.
There is provided a kind of device as above, described hysteretic loop circuit comprises schmidt trigger chip.
There is provided a kind of as above device, described hysteretic loop circuit comprises the second operational amplifier and for regulating the adjustable resistance of gearshift loop line width:
The output terminal of described first operational amplifier of reverse input end electrical connection of described second operational amplifier, positive input is electrically connected with described adjustable resistance, and output terminal is electrically connected with the input end of described power amplifier.
A kind of device as above is provided, described control circuit also comprises the first electric pressure converter being located at the first signal input part and/or the second electric pressure converter being located at secondary signal input end, and described first electric pressure converter and the second electric pressure converter are used for pulse signal or duty cycle signals to be converted to proportional analog voltage.
There is provided a kind of device as above, described shift fork driving mechanism comprises:
Electromagnet winding, spring and weighing apparatus iron:
Described electromagnet winding is electrically connected with the output terminal of described power amplifier, and described spring is located between described electromagnet winding and weighing apparatus iron, and described weighing apparatus iron is electrically connected with described shift fork.
There is provided a kind of device as above, described shift fork driving mechanism comprises the one in motor-driven mechanism, pneumatic drive mechanism or hydraulic drive mechanism.
Automatic gear shift apparatus of the present utility model adopts and inputs analog circut as control circuit by 2 variablees, control conducting and the disconnection of power amplifier, thus control conducting and the disconnection of the power supply of shift fork driving mechanism, realize shift fork gearshift, therefore the structure of automatic gear shift apparatus is simple, and volume is little, and quality is light, power consumption is also few, reduces cost.
Accompanying drawing explanation
The analog circut block diagram of the control circuit of the automatic gearshift that Fig. 1 provides for the utility model embodiment;
The shift fork driving mechanism schematic diagram of the automatic gearshift that Fig. 2 provides for the utility model embodiment.
Embodiment
In order to make technical problem to be solved in the utility model, technological scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of automatic gear shift apparatus.This device comprises control circuit, power amplifier and shift fork driving mechanism:
This control circuit is analog circut, and it is provided with the first signal input part for receiving the speed of a motor vehicle and/or motor speed signal, for receiving secondary signal input end and the level signal output terminal of accelerator pedal position signal;
The input end of this power amplifier is electrically connected with this level signal output terminal, output terminal is electrically connected with this shift fork driving mechanism, and under the control of the level signal of this level signal output terminal output, being switched on or switched off the power supply of this shift fork driving mechanism, shift fork is shifted gears.
In a preferred scheme, the analog circut block diagram of this control circuit refers to Fig. 1.This control circuit comprises the first operational amplifier 110 and hysteretic loop circuit 120:
Two input ends 111,112 of the first operational amplifier 110 are set to the first signal input part and secondary signal input end respectively, and its output terminal 113 is electrically connected with the input end of this hysteretic loop circuit 120;
The output terminal of this hysteretic loop circuit 120 is electrically connected with the input end of this power amplifier.
Concrete, the first operational amplifier 110 carries out analog computation for carrying out addition subtraction multiplication and division power to the described speed of a motor vehicle of the first signal input part input and/or the accelerator pedal position signal of motor speed signal and the input of described secondary signal input end and determines shifting points.
In the present embodiment, hysteretic loop circuit 120 comprises the second operational amplifier 121 and adjustable resistance R1, R2: the reverse input end of this second operational amplifier 122 is electrically connected with the output terminal 113 of this first operational amplifier 110, positive input is electrically connected with this adjustable resistance R1, R2, and output terminal is electrically connected with the input end of power amplifier.Concrete electric connection mode is: output terminal is electrically connected with terminal of adjustable resistance R1 and forms node A; Another terminal of adjustable resistance R1 are electrically connected with the terminal of adjustable resistance R2 and form Node B, and this positive input is also electrically connected with Node B simultaneously; The other end of adjustable resistance R2 is electrically connected with no-voltage (0V), and terminal of resistance R0 are electrically connected with node A, and another terminal are electrically connected with shift fork driving mechanism.Slow point can be set in R1/ (R1+R2) * V and R2/ (R1+R2) * V two point by the value of adjustment adjustable resistance R1 and R2 in Fig. 1.
Concrete, hysteretic loop circuit 120 adopts the second operational amplifier and adjustable resistance, can regulate gearshift loop line width.
In practical application, hysteretic loop circuit also directly can use special schmidt trigger chip.
In a preferred scheme, control circuit also comprises the first electric pressure converter 131 being electrically connected 111 with the first signal input part and/or the second electric pressure converter 132 be electrically connected with secondary signal input end 112, this first electric pressure converter and the second electric pressure converter are used for pulse signal or duty cycle signals to be converted to proportional analog voltage, and this analog voltage is used for the calculating of analog amount.
In practical application, most of motor speed is pulse signal, and speed is higher, and pulse frequency is higher, or the fixed frequency signal that dutycycle is different.Now can set up the first electric pressure converter 131 and the pulse signal of different frequency or different duty signal are converted to proportional analog voltage.If tach signal is analog voltage originally, so just need not change.Major part accelerator pedal position signal is analog voltage signal, and different magnitude of voltage represents the different depth of pedal.If accelerator pedal position signal is also variable-frequency pulse signal or variable duty cycle signal, so also by the second electric pressure converter 132, variable-frequency pulse signal or variable duty cycle signal can be become analog voltage signal.Wherein, motor speed or the speed of a motor vehicle and accelerator pedal position signal all can be gathered by sensor.
Referring to Fig. 2, is the schematic diagram of the shift fork driving mechanism of the present embodiment.This shift fork driving mechanism comprises: electromagnet winding 210, spring 220 and weighing apparatus iron 230:
This electromagnet winding 210 is electrically connected with the output terminal of power amplifier, and this spring 220 is located between this electromagnet winding 210 and weighing apparatus iron 230, and this weighing apparatus iron 230 is connected with shift fork 240.
In order to better understand the present embodiment, below the working procedure of the automatic gear shift apparatus to the present embodiment is described.
The schedule of two grades of gearboxes meets torque demand and uses one grade when being low speed large throttles.Second gear is used during high speed.As electric efficiency, during throttle, two gears can work during the little throttle of low speed and in middling speed, and namely it doesn't matter uses for which shelves, can reduce Gear-Box and reduce bearing wear when certain motor speed is low and in middling speed during throttle, namely use 2 grades relatively good.Second gear is used during high speed large throttle.Specifically be summarized as follows shown in table:
If the output voltage that low speed is corresponding little, large throttle is corresponding little output voltage also, and the first computing operational amplifier 110 so in Fig. 1 can be a simple adder.First computing operational amplifier 110 is according to two parameters (position signal of motor speed signal, the gas pedal) simulation trial received, if output HIGH voltage is just used high-grade, output LOW voltage is just with supporting shelves.First operational amplifier 110 can complete complicated addition subtraction multiplication and division simulation trial with the demand of satisfied different input voltage pattern.
In the present embodiment, the signal that control circuit exports can Direct driver shift fork driving mechanism through power amplifier.
When the output level of control circuit is timing, will control power amplifier conducting, now electromagnet winding 210 Compress Spring 220 also adhesive weighing apparatus iron 230, shift fork 240 to a lateral movement, is suspended to one of them gear by the iron 230 that now weighs.When the output level of control circuit is for time negative, will controls power amplifier and disconnect, electromagnet winding, by retracting spring 220 and weighing apparatus iron 230, makes weighing apparatus iron 230 drive shift fork 240 to opposite side motion, is suspended to another gear.
It should be noted that, in practical application, shift fork driving mechanism also can adopt motor-driven mechanism, pneumatic drive mechanism or hydraulic drive mechanism.
In practical application, the volume of this braking gearshift is very little, can be placed on the gear side in gearbox.
The automatic gear shift apparatus of the present embodiment adopts and inputs analog circut as control circuit by 2 variablees, control conducting and the disconnection of power amplifier, thus control conducting and the disconnection of the power supply of shift fork driving mechanism, realize shift fork gearshift, therefore the structure of automatic gear shift apparatus is simple, and volume is little, and quality is light, power consumption is also few, reduces cost.
Above with reference to the accompanying drawings of preferred embodiment of the present utility model, not thereby limit to interest field of the present utility model.Those skilled in the art do not depart from any amendment done in scope of the present utility model and essence, equivalent replacement and improvement, all should within interest field of the present utility model.
Claims (7)
1. an automatic gear shift apparatus, is characterized in that, described automatic gear shift apparatus comprises control circuit, power amplifier and shift fork driving mechanism:
Described control circuit is analog circut, and it is provided with the first signal input part for receiving the speed of a motor vehicle and/or motor speed signal, for receiving secondary signal input end and the level signal output terminal of the position signal of gas pedal;
The input end of described power amplifier is electrically connected with described level signal output terminal, output terminal is electrically connected with described shift fork driving mechanism, and under the control of the level signal of described level signal output terminal output, being switched on or switched off the power supply of described shift fork driving mechanism, shift fork is shifted gears.
2. device according to claim 1, is characterized in that, described control circuit comprises the first operational amplifier and hysteretic loop circuit:
Described first operational amplifier is used for carrying out addition subtraction multiplication and division power to the described speed of a motor vehicle of the first signal input part input and/or the accelerator pedal position signal of motor speed signal and the input of described secondary signal input end to carry out analog computation and determines shifting points, two input end is set to described first signal input part and secondary signal input end respectively, and output terminal is electrically connected with the input end of described hysteretic loop circuit;
The output terminal of described hysteretic loop circuit is electrically connected with the input end of described power amplifier.
3. device according to claim 2, is characterized in that, described hysteretic loop circuit comprises schmidt trigger chip.
4. device according to claim 2, is characterized in that, described hysteretic loop circuit comprises the second operational amplifier and for regulating the adjustable resistance of gearshift loop line width:
The output terminal of described first operational amplifier of reverse input end electrical connection of described second operational amplifier, positive input is electrically connected with described adjustable resistance, and output terminal is electrically connected with the input end of described power amplifier.
5. the device according to any one of Claims 1-4, it is characterized in that, described control circuit also comprises the first electric pressure converter being located at the first signal input part and/or the second electric pressure converter being located at secondary signal input end, and described first electric pressure converter and the second electric pressure converter are used for pulse signal or duty cycle signals to be converted to proportional analog voltage.
6. device according to claim 5, is characterized in that, described shift fork driving mechanism comprises:
Electromagnet winding, spring and weighing apparatus iron:
Described electromagnet winding is electrically connected with the output terminal of described power amplifier, and described spring is located between described electromagnet winding and weighing apparatus iron, and described weighing apparatus iron is connected with described shift fork.
7. device according to claim 5, is characterized in that, described shift fork driving mechanism comprises the one in motor-driven mechanism, pneumatic drive mechanism or hydraulic drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354062.2U CN204692555U (en) | 2015-05-28 | 2015-05-28 | A kind of automatic gear shift apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354062.2U CN204692555U (en) | 2015-05-28 | 2015-05-28 | A kind of automatic gear shift apparatus |
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| CN204692555U true CN204692555U (en) | 2015-10-07 |
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| CN201520354062.2U Expired - Fee Related CN204692555U (en) | 2015-05-28 | 2015-05-28 | A kind of automatic gear shift apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896081A (en) * | 2015-05-28 | 2015-09-09 | 广东戈兰玛汽车***有限公司 | Automatic gear shifting device |
| CN111936346A (en) * | 2018-03-29 | 2020-11-13 | 本田技研工业株式会社 | Drive control device for electric vehicle |
-
2015
- 2015-05-28 CN CN201520354062.2U patent/CN204692555U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896081A (en) * | 2015-05-28 | 2015-09-09 | 广东戈兰玛汽车***有限公司 | Automatic gear shifting device |
| CN111936346A (en) * | 2018-03-29 | 2020-11-13 | 本田技研工业株式会社 | Drive control device for electric vehicle |
| CN111936346B (en) * | 2018-03-29 | 2023-04-11 | 本田技研工业株式会社 | Drive control device for electric vehicle |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20210528 |
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| CF01 | Termination of patent right due to non-payment of annual fee |